1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/* dctrl-tools - Debian control file inspection tools
Copyright © 2005 Antti-Juhani Kaijanaho
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// Marked portions of this file are covered by the following
// copyright:
/*
* libdpkg - Debian packaging suite library routines
* vercmp.c - comparison of version numbers
* utils.c - Helper functions for dpkg
*
* Copyright (C) 1995 Ian Jackson <ian@chiark.greenend.org.uk>
* Copyright (C) 2001 Wichert Akkerman <wakkerma@debian.org>
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2,
* or (at your option) any later version.
*
* This is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with dpkg; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <string.h>
#include "version.h"
/* <<<<<<< originally from dpkg >>>>>>> */
/* Reimplementation of the standard ctype.h is* functions. Since gettext
* has overloaded the meaning of LC_CTYPE we can't use that to force C
* locale, so use these cis* functions instead.
*/
static int cisdigit(int c) {
return (c>='0') && (c<='9');
}
static int cisalpha(int c) {
return ((c>='a') && (c<='z')) || ((c>='A') && (c<='Z'));
}
/* assume ascii; warning: evaluates x multiple times! */
#define order(x) ((x) == '~' ? -1 \
: cisdigit((x)) ? 0 \
: !(x) ? 0 \
: cisalpha((x)) ? (x) \
: (x) + 256)
static int verrevcmp(const char *val, const char *ref) {
if (!val) val= "";
if (!ref) ref= "";
while (*val || *ref) {
int first_diff= 0;
while ( (*val && !cisdigit(*val)) || (*ref && !cisdigit(*ref)) ) {
int vc= order(*val), rc= order(*ref);
if (vc != rc) return vc - rc;
val++; ref++;
}
while ( *val == '0' ) val++;
while ( *ref == '0' ) ref++;
while (cisdigit(*val) && cisdigit(*ref)) {
if (!first_diff) first_diff= *val - *ref;
val++; ref++;
}
if (cisdigit(*val)) return 1;
if (cisdigit(*ref)) return -1;
if (first_diff) return first_diff;
}
return 0;
}
int versioncompare(const struct versionrevision *version,
const struct versionrevision *refversion) {
int r;
if (version->epoch > refversion->epoch) return 1;
if (version->epoch < refversion->epoch) return -1;
r= verrevcmp(version->version,refversion->version); if (r) return r;
return verrevcmp(version->revision,refversion->revision);
}
/* <<<<<<< END OF originally from dpkg >>>>>>> */
/* warning: modifies ver by adding nul chars; return pointers point
* inside ver. */
bool parse_version(struct versionrevision *rv, char *ver, size_t len)
{
rv->version = strchr(ver, ':');
if (rv->version == NULL) {
rv->version = ver;
} else {
*(rv->version++) = '\0';
}
rv->revision = strrchr(ver, '-');
if (rv->revision == NULL) {
rv->revision = ver + len;
} else {
*(rv->revision++) = '\0';
}
if (rv->version != ver) {
rv->epoch = 0;
for (char *p = ver; *p != '\0'; p++) {
if (!('0' <= *p && *p <= '9')) return false;
rv->epoch = rv->epoch * 10 + (*p - '0');
}
} else {
rv->epoch = 0;
}
for (char *p = rv->version; *p != '\0'; p++) {
if (('a' <= *p && *p <= 'z') ||
('A' <= *p && *p <= 'Z') ||
('0' <= *p && *p <= '9') ||
*p == '.' ||
*p == '-' ||
*p == '+' ||
*p == ':' ||
*p == '~') continue;
return false;
}
for (char *p = rv->revision; *p != '\0'; p++) {
if (('a' <= *p && *p <= 'z') ||
('A' <= *p && *p <= 'Z') ||
('0' <= *p && *p <= '9') ||
*p == '.' ||
*p == '+' ||
*p == '~') continue;
return false;
}
return true;
}
|
